This is one of the photos I got in the lot of cabinet cards I bought on eBay last month.

Although I do not know the identities of the photo's subjects, the photographer, Max Pomerantz, had his first studio at 500 South Street, in the old Jewish quarter of Philadelphia. By 1907, he had moved two blocks away to a larger studio at 700 5th Street, still in the Jewish quarter. (Source: The Jewish quarter of Philadelphia: a history and guide, 1881-1930, by Harry Davidow Boonin, at page 137, snippets digitized at Google Books.)